Home / 20,716.68-31,075.34-5,134.32

Finding the Fourth Proportional to 20,716.68, 31,075.34 and 5,134.32

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Solution

The fourth proportional to 20,716.68, 31,075.34 and 5,134.32 is: 7,701.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.68 : 31,075.34 = 5,134.32 : x
  2. Step 2: Convert to fraction form
    20,716.68/31,075.34 = 5,134.32/x
  3. Step 3: Cross multiply
    20,716.68x = 31,075.34 × 5,134.32
  4. Step 4: Simplify right side
    20,716.68x = 159,550,714.00
  5. Step 5: Solve for x
    x = 159,550,714.00/20,716.68
  6. Step 6: Final answer
    x = 7,701.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.